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How to remove non-alphanumeric characters?
...'hello-world'); // helloworld
preg_replace('/[^\p{L}\p{N} ]+/', '', 'abc@~#123-+=öäå'); // abc123öäå
preg_replace('/[^\p{L}\p{N} ]+/', '', '你好世界!@£$%^&*()'); // 你好世界
Note: This is a very old, but still relevant question. I am answering purely to provide supplementary i...
Python equivalent of D3.js
...wered Oct 10 '13 at 19:28
sk8asd123sk8asd123
1,3851212 silver badges1313 bronze badges
...
Adjusting the Xcode iPhone simulator scale and size [duplicate]
...answered Sep 4 '13 at 6:39
kumar123kumar123
73166 silver badges2121 bronze badges
How to run a program without an operating system?
...ill only load a small block of code.
Many ARM boards let you do some of those things. Some have boot loaders to help you with basic setup.
Here you may find a great tutorial on how to do a basic operating system on a Raspberry Pi.
Edit:
This article, and the whole wiki.osdev.org will anwer most o...
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
...AtLevel=1</argLine>
you should replace MaxPermSize argument as -Xms123m -Xmx123m, since MaxPermSize is already deprecated and wont take any effect on your JVM config :
<argLine>-Xms512m -Xmx512m -XX:+TieredCompilation -XX:TieredStopAtLevel=1</argLine>
...
Iterating through directories with Python
...with a simple print statement you can see that each file is found:
import os
rootdir = 'C:/Users/sid/Desktop/test'
for subdir, dirs, files in os.walk(rootdir):
for file in files:
print os.path.join(subdir, file)
If you still get errors when running the above, please provide the error...
Getting name of windows computer running python script?
...gt;>> import platform
>>> import socket
>>> import os
>>> platform.node()
'DARK-TOWER'
>>> socket.gethostname()
'DARK-TOWER'
>>> os.environ['COMPUTERNAME']
'DARK-TOWER'
sha...
Get OS-level system information
...answer the question correctly. All that data reefers to JVM and not to the OS...
– Alvaro
Feb 19 '14 at 10:33
I know t...
how to clear the screen in python [duplicate]
....
I use both Windows and Linux and I use commands to clear the screen in those, but I don't know how to do it in Python.
1 ...
error C2662: “Screen::move”: 不能将“this”指针从“const Screen”转...
...ursor = row + c;
return *this;
}
const Screen& Screen::display(std::ostream& os) const
{
os << contents << '\n';
return *this;
}
//main中处理
myScreen.display(cout).move(4,0).set('#').display(cout);
解决办法：通过返回调用函数的对象的引用，可以将一些...